This is my first post and I don't want to get my head bit off here, but don't you think that after being alone on an asshole of the universe planet for 20 years by yourself that you would talk differently than you did when you were in civilization.

I mean he held the most important job on the Coruscant (arguably) and then one day he's alone except for a couple visits from Luke for the rest of his life.

I hated most of Yoda's dialogue in the PT too (except "You must learn to let go of everything you fear to lose", that was pretty cool) but maybe he was supposed to talk more coversationally instead of the cool cryptic way he did in the OT.